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Soluzione - Long subtraction

261188, 78

261188,78

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Spiegazione passo passo

1. Rewrite the numbers from top to bottom, aligned by their place values

Place value	hundred thousands	ten thousands	thousands	hundreds	tens	ones	.	tenths	hundredths

	6	7	0	3	5	5	,	4	8
-	4	0	9	1	6	6	,	7
							,

Put zeros in the blank number places:

Place value	hundred thousands	ten thousands	thousands	hundreds	tens	ones	.	tenths	hundredths

	6	7	0	3	5	5	,	4	8
-	4	0	9	1	6	6	,	7	0
							,

2. Subtract the numbers using long subtraction method

Subtract the numbers in the hundredths column from the top number:
8-0=8

Place value	hundred thousands	ten thousands	thousands	hundreds	tens	ones	.	tenths	hundredths

	6	7	0	3	5	5	,	4	8
-	4	0	9	1	6	6	,	7	0
							,		8

Because the upper digit (4) in the tenths column is too small to get a positive difference, borrow 1 from the digit (5) in the next number place which becomes (4) and get (14).

Place value	hundred thousands	ten thousands	thousands	hundreds	tens	ones	.	tenths	hundredths
						4		14
	6	7	0	3	5	5	,	4	8
-	4	0	9	1	6	6	,	7	0
							,		8

Subtract the numbers in the tenths column from the top number:
14-7=7

Place value	hundred thousands	ten thousands	thousands	hundreds	tens	ones	.	tenths	hundredths
						4		14
	6	7	0	3	5	5	,	4	8
-	4	0	9	1	6	6	,	7	0
							,	7	8

Because the upper digit (4) in the ones column is too small to get a positive difference, borrow 1 from the digit (5) in the next number place which becomes (4) and get (14).

Place value	hundred thousands	ten thousands	thousands	hundreds	tens	ones	.	tenths	hundredths
					4	14
						4		14
	6	7	0	3	5	5	,	4	8
-	4	0	9	1	6	6	,	7	0
							,	7	8

Subtract the numbers in the ones column from the top number:
14-6=8

Place value	hundred thousands	ten thousands	thousands	hundreds	tens	ones	.	tenths	hundredths
					4	14
						4		14
	6	7	0	3	5	5	,	4	8
-	4	0	9	1	6	6	,	7	0
						8	,	7	8

Because the upper digit (4) in the tens column is too small to get a positive difference, borrow 1 from the digit (3) in the next number place which becomes (2) and get (14).

Place value	hundred thousands	ten thousands	thousands	hundreds	tens	ones	.	tenths	hundredths
				2	14
					4	14
						4		14
	6	7	0	3	5	5	,	4	8
-	4	0	9	1	6	6	,	7	0
						8	,	7	8

Subtract the numbers in the tens column from the top number:
14-6=8

Place value	hundred thousands	ten thousands	thousands	hundreds	tens	ones	.	tenths	hundredths
				2	14
					4	14
						4		14
	6	7	0	3	5	5	,	4	8
-	4	0	9	1	6	6	,	7	0
					8	8	,	7	8

Subtract the numbers in the hundreds column from the top number:
2-1=1

Place value	hundred thousands	ten thousands	thousands	hundreds	tens	ones	.	tenths	hundredths
				2	14
					4	14
						4		14
	6	7	0	3	5	5	,	4	8
-	4	0	9	1	6	6	,	7	0
				1	8	8	,	7	8

Because the upper digit (0) in the thousands column is too small to get a positive difference, borrow 1 from the digit (7) in the next number place which becomes (6) and get (10).

Place value	hundred thousands	ten thousands	thousands	hundreds	tens	ones	.	tenths	hundredths
		6	10
				2	14
					4	14
						4		14
	6	7	0	3	5	5	,	4	8
-	4	0	9	1	6	6	,	7	0
				1	8	8	,	7	8

Subtract the numbers in the thousands column from the top number:
10-9=1

Place value	hundred thousands	ten thousands	thousands	hundreds	tens	ones	.	tenths	hundredths
		6	10
				2	14
					4	14
						4		14
	6	7	0	3	5	5	,	4	8
-	4	0	9	1	6	6	,	7	0
			1	1	8	8	,	7	8

Subtract the numbers in the ten thousands column from the top number:
6-0=6

Place value	hundred thousands	ten thousands	thousands	hundreds	tens	ones	.	tenths	hundredths
		6	10
				2	14
					4	14
						4		14
	6	7	0	3	5	5	,	4	8
-	4	0	9	1	6	6	,	7	0
		6	1	1	8	8	,	7	8

Subtract the numbers in the hundred thousands column from the top number:
6-4=2

Place value	hundred thousands	ten thousands	thousands	hundreds	tens	ones	.	tenths	hundredths
		6	10
				2	14
					4	14
						4		14
	6	7	0	3	5	5	,	4	8
-	4	0	9	1	6	6	,	7	0
	2	6	1	1	8	8	,	7	8

The solution is: 261188,78

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